MyBatis与spring集成

目录

MyBatis与Spring集成

导入pom依赖

导入generatorConfig.xml

导入spring-mybatis.xml

自动生成mapper文件

 编写接口类：BookBiz

 aop整合PageHelper分页插件

编写分页查询

编写pagebean

编写PagerAspect类

测试结果

---

 

MyBatis与Spring集成

导入pom依赖

  4.0.0

  org.example
  Spring
  1.0-SNAPSHOT

  
    UTF-8
    1.8
    1.8
    3.7.0

    
    
    5.0.2.RELEASE
    
    3.4.5
    
    5.1.44
    
    5.1.2
    
    1.3.1
    
    2.1.1
    2.4.3
    
    2.9.1
    
    4.12
    4.0.0
    1.18.2
  


  
    
    
      org.springframework
      spring-context
      ${spring.version}
    
    
      org.springframework
      spring-orm
      ${spring.version}
    
    
      org.springframework
      spring-tx
      ${spring.version}
    
    
      org.springframework
      spring-aspects
      ${spring.version}
    
    
      org.springframework
      spring-web
      ${spring.version}
    
    
      org.springframework
      spring-test
      ${spring.version}
    

    
    
      org.mybatis
      mybatis
      ${mybatis.version}
    
    
    
      mysql
      mysql-connector-java
      ${mysql.version}
    
    
    
      com.github.pagehelper
      pagehelper
      ${pagehelper.version}
    
    
    
      org.mybatis
      mybatis-spring
      ${mybatis.spring.version}
    

    
    
      org.apache.commons
      commons-dbcp2
      ${commons.dbcp2.version}
    
    
      org.apache.commons
      commons-pool2
      ${commons.pool2.version}
    

    
    
    
      org.apache.logging.log4j
      log4j-core
      ${log4j2.version}
    
    
      org.apache.logging.log4j
      log4j-api
      ${log4j2.version}
    
    
    
      org.apache.logging.log4j
      log4j-web
      ${log4j2.version}
    

    
    
      junit
      junit
      ${junit.version}

    
    
      javax.servlet
      javax.servlet-api
      ${servlet.version}
      provided
    
    
      org.projectlombok
      lombok
      ${lombok.version}
      provided
    
  

  
    Spring

    
      
      
        src/main/java
        
          **/*.xml
        
      
      
      
        src/main/resources
        
          jdbc.properties
          *.xml
        
      
    

      

        
          org.apache.maven.plugins
          maven-compiler-plugin
          ${maven.compiler.plugin.version}
          
            ${maven.compiler.source}
            ${maven.compiler.target}
            ${project.build.sourceEncoding}
          
        
        
          org.mybatis.generator
          mybatis-generator-maven-plugin
          1.3.2
          
            
            
              mysql
              mysql-connector-java
              ${mysql.version}
            
          
          
            true
          
        

        
          maven-clean-plugin
          3.1.0
        
        
        
          maven-resources-plugin
          3.0.2
        
        
          maven-compiler-plugin
          3.8.0
        
        
          maven-surefire-plugin
          2.22.1
        
        
          maven-war-plugin
          3.2.2
        
        
          maven-install-plugin
          2.5.2
        
        
          maven-deploy-plugin
          2.8.2
        
      
  

导入generatorConfig.xml

导入spring-context.xml

导入spring-mybatis.xml

    
    
    
    
    

    

    
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
    

    
    
    
        
        
        
        
        
        
        
        
            
                
                    
                        
                            helperDialect=mysql
                        
                    
                
            
        
    

    
    
    
        
        
        
        
    

    
        
    
    
    

自动生成mapper文件

 编写接口类：BookBiz

package com.xiaoxu.biz;

import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;

import java.util.List;

/**
 * @author小徐
 * @site www.veryedu.cn
 * @company xu集团
 * @create 2023-08-25 15:17
 */
public interface BookBiz {
    int deleteByPrimaryKey(Integer bid);

    int insert(Book record);

    int insertSelective(Book record);

    Book selectByPrimaryKey(Integer bid);

    int updateByPrimaryKeySelective(Book record);

    int updateByPrimaryKey(Book record);

    List listPage(Book book, PageBean pageBean);
}

编写接口实现类：

package com.xiaoxu.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.biz.BookBiz;
import com.xiaoxu.mapper.BookMapper;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author小徐
 * @site www.veryedu.cn
 * @company xu集团
 * @create 2023-08-25 15:19
 */

@Service
public class BookBizimpl implements BookBiz {
   //相当于set,get方法
    @Autowired
    private BookMapper bookMapper;

    @Override
    public int deleteByPrimaryKey(Integer bid) {
        return bookMapper.deleteByPrimaryKey(bid);
    }

    @Override
    public int insert(Book record) {
        return bookMapper.insert(record);
    }

    @Override
    public int insertSelective(Book record) {
        return bookMapper.insertSelective(record);
    }

    @Override
    public Book selectByPrimaryKey(Integer bid) {
        return bookMapper.selectByPrimaryKey(bid);
    }

    @Override
    public int updateByPrimaryKeySelective(Book record) {
        return bookMapper.updateByPrimaryKeySelective(record);
    }

    @Override
    public int updateByPrimaryKey(Book record) {
        return bookMapper.updateByPrimaryKey(record);
    }

    @Override
    public List listPage(Book book, PageBean pageBean) {
//        if (pageBean !=null && pageBean.isPagination())
//            PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
//        List list = bookMapper.listPage(book);
//        if (pageBean !=null && pageBean.isPagination()){
//            PageInfo info = new PageInfo<>(list);
//            pageBean.setTotal((int)info.getTotal());
//        }
        return bookMapper.listPage(book);
    }


}

编写实体类：

package com.xiaoxu.model;


import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

//@Data
@AllArgsConstructor
@NoArgsConstructor
public class Book {
    private Integer bid;

    private String bname;

    private Float price;

    public Book(Integer bid, String bname, Float price) {
        this.bid = bid;
        this.bname = bname;
        this.price = price;
    }

    public Book() {
        super();
    }

    public Integer getBid() {
        return bid;
    }

    public void setBid(Integer bid) {
        this.bid = bid;
    }

    public String getBname() {
        return bname;
    }

    public void setBname(String bname) {
        this.bname = bname;
    }

    public Float getPrice() {
        return price;
    }

    public void setPrice(Float price) {
        this.price = price;
    }

    @Override
    public String toString() {
        return "Book{" +
                "bid=" + bid +
                ", bname='" + bname + '\'' +
                ", price=" + price +
                '}';

    }
}

编写接口测试类：

package com.xiaoxu.impl;

import com.xiaoxu.biz.BookBiz;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static org.junit.Assert.*;

/**
 * @author小徐
 * @site www.veryedu.cn
 * @company xu集团
 * @create 2023-08-25 16:04
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:spring-context.xml"})
public class BookBizimplTest {
    @Autowired
    private BookBiz bookBiz;

    @Before
    public void setUp() throws Exception {
    }

    @After
    public void tearDown() throws Exception {
    }

    @Test
    public void deleteByPrimaryKey() {
        System.out.println(this.bookBiz.deleteByPrimaryKey(1));
    }

    @Test
    public void insert() {
    }

    @Test
    public void insertSelective() {
    }

    @Test
    public void selectByPrimaryKey() {
        System.out.println(bookBiz.selectByPrimaryKey(37));
    }

    @Test
    public void updateByPrimaryKeySelective() {
    }

    @Test
    public void updateByPrimaryKey() {
    }

    @Test
    public void listPage() {
        Book book = new Book();
        PageBean pageBean = new PageBean();
        pageBean.setPage(2);
        pageBean.setRows(20);
        book.setBname("圣墟");
        this.bookBiz.listPage(book,pageBean).forEach(System.out::println);
    }
}

测试结果：

 

 

 aop整合PageHelper分页插件

编写分页查询

    select
    
    from t_mvc_book
    
      
        and bname like concat('%',#{bname},'%')
      
    
  

编写pagebean

package com.xiaoxu.utlis;

import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import java.util.Map;

public class PageBean implements Serializable {

	private static final long serialVersionUID = 2422581023658455731L;

	//页码
	private int page=1;
	//每页显示记录数
	private int rows=10;
	//总记录数
	private int total=0;
	//是否分页
	private boolean isPagination=true;
	//上一次的请求路径
	private String url;
	//获取所有的请求参数
	private Map map;
	
	public PageBean() {
		super();
	}
	
	//设置请求参数
	public void setRequest(HttpServletRequest req) {
		String page=req.getParameter("page");
		String rows=req.getParameter("rows");
		String pagination=req.getParameter("pagination");
		this.setPage(page);
		this.setRows(rows);
		this.setPagination(pagination);
		this.url=req.getContextPath()+req.getServletPath();
		this.map=req.getParameterMap();
	}
	public String getUrl() {
		return url;
	}

	public void setUrl(String url) {
		this.url = url;
	}

	public Map getMap() {
		return map;
	}

	public void setMap(Map map) {
		this.map = map;
	}

	public int getPage() {
		return page;
	}

	public void setPage(int page) {
		this.page = page;
	}
	
	public void setPage(String page) {
		if(null!=page&&!"".equals(page.trim()))
			this.page = Integer.parseInt(page);
	}

	public int getRows() {
		return rows;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}
	
	public void setRows(String rows) {
		if(null!=rows&&!"".equals(rows.trim()))
			this.rows = Integer.parseInt(rows);
	}

	public int getTotal() {
		return total;
	}

	public void setTotal(int total) {
		this.total = total;
	}
	
	public void setTotal(String total) {
		this.total = Integer.parseInt(total);
	}

	public boolean isPagination() {
		return isPagination;
	}
	
	public void setPagination(boolean isPagination) {
		this.isPagination = isPagination;
	}
	
	public void setPagination(String isPagination) {
		if(null!=isPagination&&!"".equals(isPagination.trim()))
			this.isPagination = Boolean.parseBoolean(isPagination);
	}
	
	/**
	 * 获取分页起始标记位置
	 * @return
	 */
	public int getStartIndex() {
		//(当前页码-1)*显示记录数
		return (this.getPage()-1)*this.rows;
	}
	
	/**
	 * 末页
	 * @return
	 */
	public int getMaxPage() {
		int totalpage=this.total/this.rows;
		if(this.total%this.rows!=0)
			totalpage++;
		return totalpage;
	}
	
	/**
	 * 下一页
	 * @return
	 */
	public int getNextPage() {
		int nextPage=this.page+1;
		if(this.page>=this.getMaxPage())
			nextPage=this.getMaxPage();
		return nextPage;
	}
	
	/**
	 * 上一页
	 * @return
	 */
	public int getPreivousPage() {
		int previousPage=this.page-1;
		if(previousPage<1)
			previousPage=1;
		return previousPage;
	}

	@Override
	public String toString() {
		return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", isPagination=" + isPagination
				+ "]";
	}
}

编写PagerAspect类

package com.xiaoxu.aspect;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.utlis.PageBean;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * @author小徐
 * @site www.veryedu.cn
 * @company xu集团
 * @create 2023-08-25 17:24
 *
 *          * *..*Service.*Pager(..)
 *      *:任意返回值类型
 *      *..:任意包，不限层级
 *      *service：以serveice结尾的类/接口
 *      *page：以page结尾的方法
 *      ..：任意参数
 *      符合上述条件，即为目标类或者目标方法
 */
@Aspect//代表当前类为切面类
@Component//代表当前类交给spring进行管理
public class PagerAspect {
    @Around("execution(* *..*Service.*Pager(..))")
    public Object invoke(ProceedingJoinPoint args) throws Throwable {
       PageBean pageBean = null;
        Object[] params = args.getArgs();
        for (Object param : params) {
            if(param instanceof PageBean){
                pageBean = (PageBean)param;
                break;
            }
        }

        if(pageBean != null && pageBean.isPagination())
            PageHelper.startPage(pageBean.getPage(),pageBean.getRows());

        Object list = args.proceed(params);

        if(null != pageBean && pageBean.isPagination()){
            PageInfo pageInfo = new PageInfo((List) list);
            pageBean.setTotal(pageInfo.getTotal()+"");
        }
        return list;
    }


}

测试结果